This name is a synonym of Pennellianthus frutescens Crosswhite.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 29205944) with original publication details: Trans. Linn. Soc. London 10(2): 259, t. 6 1811.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:808101-1.
This name was in version 1 of The Plant List, record tro-29205944.